一种能产生扇形波束的赋形抛物面天线  

A Shaped Paraboloid Antenna with Fan-shaped Beam

作　　者：林岩[1] 

机构地区：[1]桂林空军学院,广西桂林541003

出　　处：《火力与指挥控制》2008年第2期124-126,共3页Fire Control & Command Control

基　　金：武器装备科研基金资助项目

摘　　要：通过数值计算和实验发现:过抛物面顶点将抛物面平分成上下相等的两部分后,将下部分抛物面绕顶点向上旋转一小角度后形成的新天线(由上下两部分组成),可产生扇形波束。馈源方向图为cos3θ、口径半径为0.8m的赋形抛物面E、H平面的半功率宽度分别可达到1.2°、5.6,°而E、H平面的副瓣电平分别为-19.00 dB-、14.85 dB。A numerical calaulation and experiment show that a new kind of shaped paraboloid antenna can generate fan-shaped beams. The shaped method is rotating up the lower portion of the paraboloid around the vertex of the paraboloid. Half-power beamwidths of the shaped paraboloid on the E-plane and H-plane are 1.2 0 and 5.60 respectively, sidelobe levels of the shaped paraboloid on the E-plane and H- plane are-19.00 dB and-14.85 dB respectively （ radiation pattern of the feed is cos3 and the aperture radius of the shaped paraboloid is 0. 8m）.

关 键 词：抛物面天线 赋形抛物面天线 搜索天线 扇形波束 

分 类 号：TN82[电子电信—信息与通信工程]